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A juvenile Prisacara serrata (the length is about 2.5 cm), but already showing the typical roundish body proportions of an adult Priscacara and differing from Hypsiprisca sp. Distinguishing characters for Priscacara serrata and Cockerellites liops (old name Priscacara liops): References: Cope. E. D. (1877). A contribution to the knowledge of the ichthyological fauna of the Green River shales. Bulletin of the United States Geological and Geographical Survey 3(4):807-819 WHITLOCK, J. A. (2010). PHYLOGENETIC RELATIONSHIPS OF THE EOCENE PERCOMORPH FISHES †PRISCACARA AND †MIOPLOSUS. Journal of Vertebrate Paleontology, 30(4), 1037–1048. http://www.jstor.org/stable/40864383. Grande, L. T (2013) The Lost World of Fossil Lake: Snapshots from Deep Time. University of Chicago Press. ISBN: 13: 978-0-226-92296-6.
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From the album: Eocene
Boverisuchus sp., South TX Lutetian, Eocene Jan, 2024 Upon first glance, one could mistake this for a non-avian dinosaur tooth due to its serrations and compressed shape. You would be in good company as many early paleontologists made the same mistake. As it turns out, this terrestrial Eocene croc may have filled a similar niche to what was left behind when small theropods went extinct. To make this animal extra weird, it had hoof-like toes and appears well adapted for running down prey like dog-sized four-toed horses. Formerly known as Pristichampsus, the genus Boverisuchus was recently resurrected to encapsulate the running crocs found in North America.-
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From the album: Middle eocene fossils from Qatar
Found in dammam formation, midra shale member where it is currently undescribed. Age: Middle Eocene Size: ~6mm length I have probably gone through about 40 to 30 kgs of micro matrix and I've only found 1 which was complete(shown) and 2 almost complete specimens.- 2 comments
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From the album: Eocene
Chinatichampsus wilsonorum, South TX Lutetian, Eocene Jan, 2024 Well I hunted a new site this weekend and I must say it's pretty spectacular. This is the find of the day for sure. Chinatichampsus is my best guess. This genus was described recently from the Eocene of the Chinati Mountains in West Texas. The teeth I found exhibit a wide degree of heterodonty and fearsome serrations. Posterior teeth are bulb shaped and gradually become pointed moving anteriorly. This tooth was somewhere in between the extremes.- 2 comments
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Striatolamia? Middle eocene age, Dammam formation, midra shale member in Qatar
deltav2 posted a topic in Fossil ID
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From the album: Middle eocene fossils from Qatar
Same specimen as I had uploaded before but with better resolution this time. Found in dammam formation, midra shale member of Qatar. Age is middle eocene. This species is not described from the midra shale member or dammam formation.-
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From the album: Middle eocene fossils from Qatar
Age: Middle Eocene (45 million years old) Location: Qatar, Dukhan Formation: Dammam, midra shale member Size: 2 cm length Collected on: 17/12/23 One of the best I've ever found!! -
From the album: Middle eocene fossils from Qatar
These were found in Umm Bab Dolomite and Limestone member. Age is middle eocene. -
From the album: Middle eocene fossils from Qatar
Collected from Midra shale member of Dammam formation. Age is middle Eocene. The larger one was collected whilst surface hunting and the smaller one was removed directly from the formation.-
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From the album: Middle eocene fossils from Qatar
Collected from Midra shale in Dammam formation, Lutetian -
1. Basking shark tooth? No sign of any broken cusplets, this tooth is around 5mm long 2. Fish jaw? It is a lot more thicker than the other ones I have found, and much larger. Its shape is rectangular and both sides are relatively flat Wondering if it could be a piece of a sawfish rostrum Measures 1.6 cm in length,1 cm breadth and 5 mm thickness, each of the teeth average around 1 mm in diameter I am hoping these pictures are sufficient but I can send more angles if needed. Thanks for reading and looking forward to everyone's replies
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From the album: Middle eocene fossils from Qatar
Nice preservation, white roots are rare, and this one still has those pores which are usually filled by minerals. Extensive feeding damage. 2.6 cm length, Midra shale formation, Qatar. lutetian- 1 comment
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Hello everyone, I am a bit late to post this as my trip was over a week ago (13 oct) but better late than never I guess. For this trip I had gone to west Qatar, which is on the other side of the country but only about an hours drive. (Pic from previous trips) About the area: It is entirely composed of lutetian rocks, and the valleys in-between the hills are mostly composed of eroded remnants of the midra shale formation, and leaving big teeth concentrated at the surface. The hills are of a different formation, I am not sure what the name is but only invertebrate fossils can be found on them. I had been to this locality thrice before with no luck (0 teeth were found, only 1 stingray barb) so this time I thought to try out some UV hunting at night. So far all my teeth finds were only sourced directly from a bulldozed mound of midra shale fm rocks, where big teeth, especially odontaspis, serratolamna, galeocerdo and pristis rostral denticles are rare so my main goal was to find some of these. Heres how they looked under UV light: All my finds: The biggest one (top left) is about 3.5 cm (for scale). All these were found within an hour of surface searching, but the myliobatis mouthplate, posterior odontaspis tooth, the sphyrna tooth embedded in matrix and the thing in the lower right corner was found from the bulldozed midra shale area(the one I referenced earlier) which is around 10 minutes away from the surface hunting area. My best finds: 1. Pristis lathami (I joined 2 fragments I found using some clay(temporary), I am not sure if both pieces are associated or not) 2. Odontaspis winkleri 3. and 4. Serratolamna 5. Myliobatis mouthplate 6. Posterior odontaspis 7. Eotrigonodon 8. Pycnodus sp. Cf. mokattamensis 9. Dugong bone (prorastomus?) 10. Propristis schweinfurthi 11. and 12. Galeocerdo latidens 13. Shark vertebra I did not expect this level of preservation from surface finds, especially the 11th, 2nd and and 1st one and many of the other finds in the previous picture, so I think I got very lucky with finding a recent exposure I am unsure what this one is, its the same size as the myliobatid jaw and I guess its some sort of crusher teeth jaw Also for some reason, when looking at my pristis rostral denticle from below, it does not show that indented flat region, maybe because it only shows up when its more larger? Close up of the myliobatid mouthplate shows the interlocking structure of the teeth, I always wondered how the teeth stuck together Well thats the end, thanks for reading!
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From the album: Middle eocene fossils from Qatar
Shark vert found in midra shale fm. of Qatar, middle eocene. Vertebras are rare to find, even regular fish vertebras, and they usually come in the 5mm - 2mm size range, so something this big is very rare. Despite being recovered directly from the matrix it was embedded in, it was still broken, so that means it was broken prior to fossilisation. Also this was associated in the same matrix piece with the cylindracanthus rostrum I found previously, which you can see in my gallery. -
From the album: Middle eocene fossils from Qatar
Rare zebra shark tooth from the midra shale formation of Qatar, Middle eocene. This is the only specimen I have found of it so far, its around 1.5mm in length. Zebra sharks can still be found in the waters of Qatar, just like dugongs.- 1 comment
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From the album: Middle eocene fossils from Qatar
Good specimen, about 2 cm in length Qatar, midra shale formation, Middle eocene -
1. Originally I thought this was a pristis rostral tooth but I am unable to match it with any of the pristis species found here The exposed region is 5 cm long 2. Is it squatina sp.? 3. These 2 pieces were found together and they came apart, I think they're 2 halves of a tetraodontiforme(?) mouthplate(closest thing i can think of but im not sure), Can the species be determined? I will be posting more finds as I take pics of them
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From the album: Middle eocene fossils from Qatar
Rare specimen of a cylindracanthus rostrum. It is from midra shale fm qatar and middle eocene aged. The exposed part is around 5 cm in length. I attempted to remove the tooth from the matrix but then it began to fall apart, so I will try to get b72 and soak the entire specimen before doing anything else with it. First ever recorded specimen from midra shale fm-
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millimetre scale Closer image of the cusps If more images are needed to ID I'd be happy to post them. Any help is appreciated
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From the album: Middle eocene fossils from Qatar
Found in midra shale formation, Qatar, Lutetian. One of the rarer teeth to find. The largest one is 5 mm in length -
From the album: Middle eocene fossils from Qatar
Middle eocene, Midra shale formation Qatar, the left side of the root was missing when I found it whilst collecting matrix in May and I found the missing piece more than a month later in the same matrix I collected- 1 comment
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Found this tooth in the vertebrate layer on my second Whisky Bridge (Lutetian, Eocene) hunt like 6 or so months ago. I just assumed it was a fish tooth, so I didn't put too much research into it at the time. Found it again while packing today and now I'm wondering what it is. I can't find any similar Eocene fish teeth in my Googling. Now that I have some marine croc teeth under my belt, I'm starting to wonder if this could be one even though I've never heard of croc material from the site. The tooth is about 9.5 mm tall and 1.5 mm in diameter on the base. It has deep striations that are densest and most uniform on the lingual side. The striations persist on the labial side, but are less dense and deep. It has a sigmoidal curvature labiolingually and two prominent cutting edges. Feel free to tag anyone who knows a thing or two about the site! @jkfoam @Jared C @erose @JohnJ Thanks!
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Taxonomy from Fossilworks.org. Prepped by transfer method (Toombs, Harry; A.E. Rixon (1950). "The use of plastics in the "transfer method" of preparing fossils". The museums journal. 50: 105–107.) As far as I know, four bat genera with a total of 8 species are known from Messel: Palaeochiropteryx tupaiodon and P. spiegeli, Archaeonycteris trigonodon and A. pollex, Trachypteron franzeni, Hassianycteris messelense, H. magna and Hassianycteris? revilliodi. The genus Palaeochiropteryx is the most common and smallest bat from Messel with a wingspan of around 26 to 29cm. Archaeonycteris is rarer and somewhat larger - the wingspan is about 37cm. The largest bat in Messel is Hassianycteris magna with a wingspan of almost 50cm. Bat with partially preserved flight skin and ears. What is peculiar about this piece is that the bones show fractures. The forearm bones (ulna and radius) on both sides are broken in exactly the same place. Additionally, one of the lower legs may have been broken as well. Diagnosis from Russel & Sigé p. 124 (translated from French by oilshale): "larger size than Palaeochiropteryx tupaiodon. P3 relatively wider and shorter; protoconid lower; tubercles of lower molars less high and less acute; trigonid of M1 forming a more equilateral triangle; talonid of M3 notably narrow, and lower relative to trigonid. Upper canine relatively shorter and broader at its base than that of P. tupaiodon; its horizontal outline less acute posteriorly; talon of P³ broader lingually, with its posterior margin more transverse to the dental series; on M1-M², notch between mesostyle and parastyle less deep." Identified by Dr. G. Storch, Forschungsinstitut Senckenberg, Frankfurt a. M. Germany. References: Revilliod, P. (1917): Fledermäuse aus der Braunkohle von Messel bei Darmstadt. Abhandlungen der Großherzoglichen Hessischen Geologischen Landesanstalt zu Darmstadt, 7 (2), 162-201. Richter, G. & Storch, G. (1980): Beiträge zur Ernährungsbiologie eozäner Fledermäuse aus der "Grube Messel". Natur und Museum, 110 (12), p. 353-367. Russell, D. E. & Sigé, B. (1969) REVISION DES CHIROPTÈRES LUTÊTIENS DE MESSEL (HESSE, ALLEMAGNE). Palæovertebrata, Montpellier, 3 : 83-182, 29 fig., 6 pl. Simmons, N.B. & Geisler, J.H. (1998): Phylogenetic relationships of Icaronycteris, Archaeonycteris, Hassianycteris and Palaeochiropteryx to extant bat lineages, with comments on the Evolution of echolocation and foraging strategies in Microchiroptera. Bulletin of the American Museum of Natural History, 235: 1-182.
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Prepped by transfer method (Toombs, Harry & Rixon, A.E. (1950). "The use of plastics in the "transfer method" of preparing fossils". The museums journal. 50: 105–107.) Taxonomy from Fossilworks.org. Since the holotype is apparently lost, a neotype was established by PETERS in 1983. This specimen is a paratype in the publication by PETERS 1983. Mayr 2002, p. 502: "In the original description, WITTICH (1898) considered R. messelensis to be morphologically closest to the painted snipes (Rostratulidae, Charadriiformes), and HOCH (1980) also erroneously redescribed the species as a charadriiform bird, ‘With columboid features”. PETERS (1983) first recognized Rhynchaeites messelensis as an early representative of the Threskiornithidae (ibises), and synonymized Plumumida lutetialis HOCH 1980 with Rhynchaeites messelensis WITTICH 1898. HOCH (1980) and PETERS (1983) gave detailed accounts of the osteology of R. messelensis." Diagnosis from Mayr 2002, p. 502: “The Rhynchaeitinae nov. subfam. are characterized by the following characters: (l) beak long, slender, and schizorhinal, tip slightly decurved, and proximal part of maxilla below narial openings dorso-ventrally high; (2) at least three thoracic vertebrae fused to a notarium; (3) coracoid with deeply excavated, cup-like facies articularis scapularis (fig. 1); (4) sternum with deep incisura lateralis and wide trabecula mediana; (5) carpometacarpus with wide symphysis metacarpalis distalis; (6) cristae iliacae dorsales of pelvis not fused with crista spinosa synsacri; (7) tarso-metatarsus shorter than femur.” Identified by Prof. Dr. D. St. Peters, Senckenberg Research Institute Frankfurt/M, Germany. In 1978, the Senckenberg Museum in Frankfurt organized a special exhibition "Fossils from the Messel Pit". The same fossil was in many exhibits that the museum had which included fossils borrowed from other amateur collectors. References: Wittich, E. (1898). Beiträge zur Kenntnis der Messeler Braunkohle und ihrer Fauna. Abhandlungen der großherzoglich Hessischen geologischen Landesanstalt zu Darmstadt 3(3):79-147. Hoch, E. (1980). A new Middle Eocene shorebird (Aves: Charadriiformes, Charadrii) with columboid features. — Natur. Hist. Mus. Los Angeles County, Contrib. in Sci., 330: 33—49. Peters, D. St. (1983). Die "Schnepfenralle" Rhynchaeites messelensis Wittich 1898 ist ein Ibis (The "snipe rail" Rhynchaeites messelensis Wittich 1898 is an ibis). Journal für Ornithologie 124(1):1-27. Mayr, G. (2002). A contribution to the osteology of the Middle Eocene ibis Rhynchaeites messelensis (Aves: Threskiornithidae: Rhynchaeitinae nov. subfam.). Neues Jahrbuch fur Geologie und Paläontologie Monatshefte 2002(8):501-512. DOI:10.1127/njgpm/2002/2002/501. Mayr, G. & Bertelli, S. (2011). A record of Rhynchaeites (Aves, Threskiornithidae) from the early Eocene Fur Formation of Denmark, and the affinities of the alleged parrot Mopsitta. Palaeobiodiversity and Palaeoenvironments 91(3):229-236. DOI:10.1007/s12549-011-0050-8. SMITH, N. D., GRANDE, L., & CLARKE, J. A. (2013). A NEW SPECIES OF THRESKIORNITHIDAE-LIKE BIRD (AVES, CICONIIFORMES) FROM THE GREEN RIVER FORMATION (EOCENE) OF WYOMING. Journal of Vertebrate Paleontology, 33(2), 363–381. http://www.jstor.org/stable/42568675.
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